Universal shaft-coupling



H. R. GEER.

UNIVERSAL SHAFT CUUPLING.

APPLlcMmN man uec.1o,w19,

Pmndmg. 31,1920.

\ mvEmoh Hvfy R. 06er:

ATTORNE lA and .State of. Pennsylvania, have invente certain new und useful Improvements in;

uN1TEosTArrmNT omer..

Jimi' n. GEEL, or a'omsrsfrowiv, PENNSYLVANXL UNIVERSAL SHAFT-COUPLING.

To all lo/wm it may concer/n .BC it known that I, HARRY R. Gunn, a citizen of the United States, and e resident of the citir of Johnstown. county of Cumbria Universel ShaftfCouplin and I do liereby'f declare the following to a full, clear, and exact description or tlie4 invention, Euclide will enable others skilled iu the dri'. to which it nr pertains to make and use the same.

y invention lrelates to improvements in universal shaft cou lings adopted for use in connecting two sha, te not in ulincuient, such couplings being; particularlv'well ada, ted for oounectin the driving slilits of rolling mills with t cir respective lvario-hir die tance roll necks for the purpose of rotating .the rolls.

The main ob'ects of my invention. erez- First, to provicie e. universel slieftfcouplin simple in' structure and easy to assemble au dieeseemble for renewal of wearing parte. Ssconifto provide a universalshaft coupling of great utility und economy with the necessaryv rigidity and the proper Hexibility for efiiclent und pm'ctically noiseless operotion; Third, to provide a universal shaft coupling with the proper meenswherewith to miiintein necessaryund suilicient lubrication with maximum economy of luloricmit.y and' coincident with this, extraneous matter is prevented from reaching the bearing parte and unnecessary wear thereby eliminated.

My invention consists `cssentieiliy 4of a spindle f xiupiing with transverse end pro- 'ections more or less rounded in forni and aving two parallel centrally recessed plano A faces, said projections acting as pivots about wlhich the spindle may'oscillate in a certain i ane.

p The coupling heads of the pinion shaft and roll shaft are preferably enlarged and each has a transverse cylindrical 'recess con toiningxed central groove 'Ldaptecl to receive a correspondin' cylindrical projection on the back of u s ipper or bearing piece, the' front face of which is substantially lint where it bears on the parallel plane faces of the ends of the spindle. coupling.

I muy prefer to use u liner fitting into the transverse cylindrical recess of the coupling heads, which liner is e sector of a hollow cylinder and has on its inner surface a central groove adapted to receive the cylin- Spccilcatlon. of Lettera Patent.

vhemels and sleeve in section, the-heed ,ing 100 Patenten Ang. 31 1920.

Application filed December 10, 1919. Serial. No. 343,699.

drical projection ou the back of the slipper previously mentioned. In this case the cen tml groove of the transverse cylindrical rev cess in `the couplinr liesul would be omitted end the, liner suiisliy .fastened to the cour- Eling'ead.

Surrounding euch end of the universel shaft Vcoupling is fi cylindrical nml tlnfnged coupling sleeve 4or muil having :in annuler groove nextto the flange The inner surface also hee'four longitudine! wes spaced about ninety decrees eport. Y irccljf in line with two of liesse dianietricully opposite grooves are two out mit or notion-l portions m the fleuve, the letter ocio# en ficii by keepers, nog on ein' non, i ise bell hele @long boli hole in tliegkeepem.

Fo' f llene ifi noiclies in the ciale of the coupling hendspccefi siiniieriy to tlie bolt .liolec'above mentioned, are 'pockets for T- sembly.

The result of this combination is to furnisha. means whereby all .lubricant io maintained in its proper piece und to aforclfan. easy and quick assembly or diseseembly, 4at the seme time supplying a llracticelly noiseiess sind flexible universi; shaft coupling ree from iostmotion. o, ,Hoving thus given o generali deslnjiption of my invention, l' will now, in order to mieke;v the mutter more clear, refer to the annexed sheet of drawings, which 'forms port of thisjspecification, inll in which like char enters refer to like pa ris Figure 'l is a side elevation of my imn proved imiversal shaft cmipling1 the leftliand coupling head being shown in a central vertical section and the righbhuncl coupling heedbeing shown in elevation Wit-h the coupling sleeve in section; Fig. 2 is a side elevation ofone of the coupling head connections showing one side of one of the cou ling turned at right ongles to the position illustrated in Fig. i; Ivi 3 is e vertical trans 'verse section tlirou heads taken on the ine IIL-JH of Fig Fig. 4 is a vertical sectional elevation throu h" theY spindle teken on the line lV V of xFig. 2; Fi 5 is an inside end elevation of one of t e cou ling sleeves' Fig. 6 is an end elevetion of tige male end o the spindle coupling; FigA i is an end eleone of the coupling 1vation of the female end of one of the coupling heads; Fig. 8 is a detail illustrating the manner of attaching the coupling sleeve to the coupling head; Fig. 9 is a perspective view of one of the slippers; Fig. l() illustrates in top plan a liner or bushin which I may use around the slippers; and `ig. 11 is a front elevation of the liner or bushing with slippers.

Referring how to the characters ol reference on the drawings 1 represents'part of an adjustable or fixed roll, 2 the pinion, 3 neck of roll, 4 the'neck of the pinion and 5 4and 6 are bearing blocks under Il and 4- respectively. 7 and 8 are respectively the coupling head of the roll and the pinion ln cach of which is sho'wn the cylindrical recess 9. l0 is the central groove in 9 for receiving 12, the corresponding cylindrical projection on the back of the slipper 1l, the front face of which is the bearing surface in contact with the centrally recessed parallel plane faces of 27, which are the fiat ends of the spindle coupling.

The two cut out or notched portions l5 in the flange l4.are spanned by the two keepers 1G, this construction together with the flange 14 serving to retain the lubricant. Four notches 17 in the side of each of the coupling heads 7 and 8 with the enlarged opcn` ings F18 serve as pockets to hold the T-heads of the bolts 19, said bolts passing through the bolt holes 23 in the flange 14 and the bolt holes in the keepers 16, thus holding the kee ers 16 to the flanged coupling sleeves 14 an the latter to the coupling heads 7 and 8 when the nuts 24 are tightened. The tapered inner surface 20 of the coupling sleeve 13 sei-"es to make a drawing fit on the conpling heads, the grooved out portions 21 of the tapered inner surface 2Q of the coupling sleeve 13, allowing for clearance of the flat ends 27 of the spindle coupling 25, when as sembling and` also when in operation as the oscillatory motion takes place. The annular groove 22 in the coupling sleeve 13 toget r with the flanged edge 14 of the coupling sleeve andthe keepers 16-retain and? distribute the lubricant to the bearing surfaces,

The s indle coupling 25 has the upset or enlarge ends 26 and the flat ends of the spindle coupling 27 have two centrally recessed parallel plane bearing faces and other faces cylindrical for clearance as the oscil latory motion takes place.

I may prefer to use the following construction to replace in part what has heretofore been described Y 28 is a liner with the shape of a section of a hollow cylinder having in its inner surf ce a grooved central portion 29 to receive he cylindrical projection 12 on the back of the s ipper 11. In case the liner 28 is used, the

i cylindrical recess 9 in the coupling heads 7 and 8 would be omitted Vand the liner 28 merely fitted into the cylindrical recess 9 in the cou )linr heads 7 and 8 and fastened thereto y t e bolts through the holes 30 in the liner.

Thel object of this construction Yis that in case of any wear occurring it would come not on the coupling head but on the liner, a relatively economical piece to re lace.

Although I have shown und rescribed my invention in, considerable detail, l do not wish to be limited to the exact and specific details thereof, as shown and described, but may use such modifications in, substitutions for, or e( uivalents thereof, as nre embraced within t e scope of my invention, or as pointed out in the claims.

llavin r thus described my invention, what I c aim and desire to secure by Leiters Patent is y l. In a universal shaft coupling, a shaft, a coupling head thereon provided with a transverse cylindrical recess, opposed sli i pers, each provided with n substantially plane face and an opposite face of convex cylindrical form adapted to slidably engage the interior surface of said recess, a second shaft provided with a flattened end adapted to slidably and pivotally engage said slip pers between the plane faces thereof, a flanged cylindrical couplin sleeve secured to said coupling head there y retainin the parts of the coupling, notches in the ange of said coupling sleeve, and keepers spanning said notches whereby said flange is adapted to retain lubricant.

2. ln a universal shaft coupling, a rotatable driving element, coupling heads on the 'contiguous ends of said elements, a transverse cylindrical recess in each of said coupling heads, a pair of opposed slippers in each recess adapted to slidably enga e the recess, a spindle provided with flattene ends adapted to slide between and pivot on the op sed faces of said slippers, a flanged cy indrical couplin sleeve secured to each couplirighead an adapted to retain the parts o 4the coupling, notches in the flange of each coupling sleeve, and keepers adapted to span said notches whereby the flange is adapted to retain lubricant.

. 3. In a universal shaft coupling, a driving shaft, a driven shaft, cou ling heads on the conti ruousends of said s afts, a transverse cylin rical recess in each of said oouplin heads, opposed slippers, each provided wi a Substantially plane face and an opposite face of convex cylindrical form adapt/ed to slidably engage the inner surface of the recesses in the coupling heads, a spindle provided with transverse end projections adapted to slide between and pivot on the opposed plane faces of said slippers, a. flanged c lndrical coupling sleeve secured 'to each o said couplin heads and adapt/ed to retain the parts of t e coupling,motches los in the flange of each coupling sleeve, and keepers spanning the notches whereby the flange is adapted to retain lubricant.

4. In a universal shaft coupling, a driving shaft, a coupling head thereon provided with a transverse cylindrical. recess, a liner secured to the coupling head Within said recess, opposed slippers, each provided with e substantially plane face and an opposite face of convex cylindrical form adapted to slidabl engage the interior surf ace of said liner, a diiven shaft, a transverse end projection thereon provided with opposed faces adapted to pivotally and slidahly engage said slippers between the opposed plane faces thereof, a flanged cylindrical coupling sleeve secured to said coupling head and adapted to retain the parts of the coupling, notches in the flange ofl said coupling sleeve, and keepers adapted to span the notches whereby said flange is adapted to retain lubricant.

5. In a universal shaft coupling, a driving shaft, a driven shaft, coupling heads on the contiguous ends of said shafts, a transverse cylindrical recess in each coupling head, liners therein secured to the coupling head, opposed slippers, each provided with a sul)- stantially plane face and an opposite face of convex cylindrical form adapted to slidahly enga e the interior surface of said liners, a spin le, end projections thereon provided with opposed faces which are adapted to slidably and pivotally engage said slippers between the plane faces thereof, a hanged cylindrical coupling sleeve secured to each of said coupln f heads and adapted to retain the parts ol tie coupling, notches in the flange of each ol' said coupling sleeves, and keepers spanning the notches whereby the lianges are adapted to retain lnin'icant.

In Witness whereof l hereunto aiiix niy signature.

HARRY R. GEBR. 

